Can You Programmatically Control Browser Zoom Levels?

Changing the Browser Zoom Level - Is It Possible?

Many web developers have expressed a desire to manipulate browser zoom levels programmatically. This request stems from the shortcomings of CSS zoom, particularly regarding image distortion and layout issues.

While the feasibility of altering browser zoom levels has been a topic of debate, there are indeed ways to achieve it in certain browsers.

Implementation in Internet Explorer and Chrome

Internet Explorer and Chrome offer programmatic control over browser zoom. The following JavaScript code demonstrates how to implement zoom functionality in these browsers:

<script>
function toggleZoomScreen() {
    document.body.style.zoom = "80%";
} 
</script>

By assigning a value (e.g., "80%") to the document.body.style.zoom property, you can set the zoom level for the entire page. To implement zoom controls, you can create buttons that call this function:

<img src="example.jpg" alt="example" onclick="toggleZoomScreen()\">

Limitations in Firefox

Unfortunately, Firefox does not currently support programmatic control over browser zoom level. This omission has been confirmed by numerous reports.

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